Weather Alert in Illinois

Recent Locations: Chicago, IL  
Current Alerts for Chicago, IL: Extreme Heat Watch

Flood Warning issued June 19 at 9:45AM CDT until June 20 at 6:00PM CDT by NWS Milwaukee/Sullivan WI

AREAS AFFECTED: Winnebago, IL; Rock, WI

DESCRIPTION: ...The Flood Warning continues for the following rivers in Illinois...Wisconsin... Turtle Creek Near Clinton affecting Rock and Winnebago Counties. * WHAT...Minor flooding is forecast. * WHERE...Turtle Creek near Clinton. * WHEN...Until tomorrow evening. * IMPACTS...At 8.5 feet, Portions of East Creek Rd threatened east of Tiffany. Parking lots threatened at Turtle Creek Parkway near Tiffany Stone Bridge. Widespread inundation of forest land north of Clinton and in the east side of Beloit. * ADDITIONAL DETAILS... - At 8:00 AM CDT Thursday the stage was 7.6 feet. - Bankfull stage is 6.0 feet. - Forecast...The river is expected to rise above flood stage this afternoon to a crest of 8.5 feet this evening. It will then fall below flood stage tomorrow morning. - Flood stage is 8.0 feet. - Flood History...This crest compares to a previous crest of 8.5 feet on 06/13/2008. - http://www.weather.gov/safety/flood

INSTRUCTION: Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. Motorists should not attempt to drive around barricades or drive cars through flooded areas. Additional information is available at www.weather.gov. The next statement will be issued this evening at 945 PM CDT.

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Current U.S. National Radar--Current

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North America Water Vapor (Moisture)

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Weather Topic: What are Mammatus Clouds?

Home - Education - Cloud Types - Mammatus Clouds

Mammatus Clouds Next Topic: Nimbostratus Clouds

A mammatus cloud is a cloud with a unique feature which resembles a web of pouches hanging along the base of the cloud.

In the United States, mammatus clouds tend to form in the warmer months, commonly in the Midwest and eastern regions.

While they usually form at the bottom of a cumulonimbis cloud, they can also form under altostratus, altocumulus, stratocumulus, and cirrus clouds. Mammatus clouds warn that severe weather is close.

Next Topic: Nimbostratus Clouds

Weather Topic: What is Precipitation?

Home - Education - Precipitation - Precipitation

Precipitation Next Topic: Rain

Precipitation can refer to many different forms of water that may fall from clouds. Precipitation occurs after a cloud has become saturated to the point where its water particles are more dense than the air below the cloud.

In most cases, precipitation will reach the ground, but it is not uncommon for precipitation to evaporate before it reaches the earth's surface. When precipitation evaporates before it contacts the ground it is called Virga. Graupel, hail, sleet, rain, drizzle, and snow are forms of precipitation, but fog and mist are not considered precipitation because the water vapor which constitutes them isn't dense enough to fall to the ground.

Next Topic: Rain

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